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Inorganic granulate materials

a technology of inorganic granulate materials and inorganic granulates, which is applied in the direction of pigmentation treatment, magnesium hydroxide, chemistry apparatus and processes, etc., can solve the problems of complex process, high cost, and difficult granulation of pure alkaline earth metal oxides and alkaline earth metal hydroxides, and achieve improved properties in handling, transportation and storage.

Inactive Publication Date: 2018-05-31
IMERTECH SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent text describes how certain materials can be made easier to handle and store by mixing them with talc, bentonite, zeolite, diatomaceous earth, cationic mica, hydrophobic carbonates, or mixtures of these process aid additives. This applies to both particulate alkaline earth metal hydroxides and oxides. The technical effect is that the resulting mixture has improved properties for handling, transport, and storage. Additionally, the patent mentions a method for reducing the energy required to granulate these materials by adding talc to them.

Problems solved by technology

It is a common problem that pure alkaline earth metal oxides and alkaline earth metal hydroxides are difficult to granulate.
However, the process is complex and involves both chemical and mechanical steps.

Method used

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Examples

Experimental program
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examples

[0027]Various mixtures comprising Mg(OH)2, talc and water were subjected to granulation in a standard pelletiser according to methods known to the skilled person in the art. The required amount of water was added at room temperature in a Henschel mixer. The Mg(OH)2 used was obtained as an aqueous slurry (53 wt.-% solids content; Nedmag), dried, ground, rewetted and then mixed with dry talc to obtain the respective mixtures comprising Mg(OH)2, talc and water for pelletisation. For Examples 1 to 4 and Comparative Example 1, the talc used was a commercial available grade named Mistron 85-6 F from Imerys Talc with a medium particle size of around 3.5 μm measured in a Sedigraph®. For Examples 5 and 6, and Comparative Example 2, the talc used was a commercial available grade named Mistron 89-5 F from Imerys Talc with a medium particle size of around 2,2 μm measured in a Sedigraph®. Pelletisation was done at room temperature using a laboratory press from Kahl Type 14-175. The dye used had ...

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PUM

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Abstract

The present invention relates to a granulated composition, comprising a particulate alkaline metal hydroxide or alkaline metal oxide or mixtures thereof and methods of granulating particulate alkaline metal hydroxides and alkaline metal oxides or mixtures thereof. The invention further concerns the granulated products obtained from the said methods.

Description

FIELD OF THE INVENTION[0001]The present invention relates to granulated inorganic materials. In particular, the materials are in granulated form. Also part of the invention is a method of preparation of such inorganic granulated materials.BACKGROUND OF THE INVENTION[0002]Traditionally, inorganic particulate materials are provided in the shape of powders, granulates, agglomerates, coagulates, or in granulated form. It is a common problem that pure alkaline earth metal oxides and alkaline earth metal hydroxides are difficult to granulate. In order to improve handling and transport of large amounts of alkaline earth metal oxides and alkaline earth metal hydroxides, it would be desirable to provide these particulate materials in granulated form.[0003]GB 1 474 584 A discloses a method of making magnesium hydroxide pellets from sea water and magnesia. However, the process is complex and involves both chemical and mechanical steps.[0004]It is therefore sought to provide a method for granul...

Claims

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Application Information

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IPC IPC(8): C09C3/04C09C3/06C01F5/14C09C1/02
CPCC09C3/045C09C3/06C09C1/02C01F5/14C09C3/04
Inventor LIKITALO, MIKKOBIZA, PETER
Owner IMERTECH SAS